Legend:

There has been a vigorous thread on error attribution ("I get a `head []` error; but who called `head`?"). This page summarises some half baked ideas that Simon and I have been discussing. Do by all means edit this page to add comments and further ideas or pointers. (As usual, ''discussion'' is best done by email; but this page could be a place to record ideas, design alternatives, list pros and cons etc.)

3

There has been a vigorous thread on error attribution ("I get a `head []` error; but who called `head`?"). This page summarises some half baked ideas that Simon and I have been discussing. Do by all means edit this page to add comments and further ideas or pointers. (As usual, ''discussion'' is best done by email; but this page could be a place to record ideas, design alternatives, list pros and cons, pointers to related work etc.)